/Engine/Source/Editor/AnimGraph/Public/AnimGraphNode_Trail.h
Selection notification callback. If a node needs to handle viewport input etc. then it should push an editor mode here.
virtual void OnNodeSelected ( bool bInIsSelected, class [FEditorModeTools](API\Editor\UnrealEd\FEditorModeTools) & InModeTools, struct [FAnimNode_Base](API\Runtime\Engine\Animation\FAnimNode_Base) * InRuntimeNode )